Smoke consuming furnace



No. 627,!43. yPatent'ed lune 20, i899.

A. B. BECK. L SMOKE CDNSUMING FURNACE.

(Application led Mayl, 1898.) l (No Model.) 4 2 Sheets.-Sheet I.

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Ilz Mari() fg@ JM@ No. s27,|43. Patented lune 2o, |899. A. B. mack. SMOKE CNSUMING FUBNACE.

(Application tiled. Mayfi, 1898.)

2 Sheen-Sheet 2.

(No Model.)

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NrrED STATES PATENT GEEICE.

ANDERS BORCH RECK, OF COPENHAGEN, DENMARK.

SMOKE-CONSUIVI'ING FU RNACE.

SPECIFICATION forming part of Letters Patent No. 627,143, dated J une 20, 1899. Application filed May 14, 1898. Serial No. 68,735. (No model.)

T ftZ whom, it may concern..-

Be it known that I, ANDERS BORCH BECK, of Copenhagen, Denmark, have invented new and useful Improvements in Smoke-'Consuming Furnaces, of which the following is a full, clear, and exact description.

My invention relates to smoke-consuming furnaces, and has for its object to p rovide a device of the above-indicated class which will be simple in construction' and capable of utilizing soft coal. i

The invention will be fully described hereinafter and the features of novelty pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate correspondingparts in all the igures.

Figure l is a front elevation of the improved furnace. tions thereof, taken at right angles to each other. Figs. 4i, 5, 6, and 7 are sectional plans taken, respectively, on the lines I I, H II, III

III, and IV IV of Fig. 2.

F is the cylindrical body of the furnace, having a bottom or base E and a top plate G.

I is the ash-pit, and Q the grate, upon which is adapted to rest the fuel in the magazine A B, which consists Aof a series of tubes T, with a funnel or hopper V above said tubes.

P is a fireproof wall or partition at the top of the ash-pitI and surrounds the lower part of the fuel-magazine V A B.

R is a door opening into the ash-pit I, and R2 R3 are doors opening into' the channels C D, which surround the magazine, as shown in Figs. 5 and 6.

K is a boiler of annular shape resting on top of the body-F and spaced from the hopper V. Within said boileris located a shell forming a ring-shaped space M, which by means of the uptake-fines O communicates with the channel D. A tube S connects withthe boiler andA extends first down to the bottom of the furnace and then up to the level of the uppermost tube T. One end of each tube T communicates with said tube S', Figs. 4, 5, and 6, and the other end connects with the tube S2, reaching down from the upper part of the boiler. It will be understood that a circulation of water will be obtained from the boiler Figs. 2 and 3 are sectional elevathe tubes T, is iilled with ireproof putty or like material, so as to prevent the passage of air.

The jacket formed by the walls H H2 is divided into an upper and a lower chamber by the partition P, each of which chambers has 4a bent aireinlet tube, as at X and Y, said tubes being located at the rear of the furnace and being open at their upper ends. These ends are adapted to be closed by plates or valves aand b, respectively. The upper valve d is rigidly secured to a vertically-movable rod c, while the lower valve b is loose upon the rod, so that the latter can slide through the valve b. The rod c .has a shoulder or knob d below the valve Z) and at such a distance from the valve a that when the valveb rests on said knob and the rod c moves downward the valve b will close the air-inlet tube Y before the valve a reaches its seat to close the air-inlet tube X. The rodcis connected by a chain c to a leverf, fulcrumed atg to a pressureregulator 71,', comprisingacasing h2, in which is a diaphragm 71, connected with the leverf. Y The lower chamber of the casing h2 communicates with the boiler K.

The path of the air will be seen best in Fig. G. When the valve ct is open, air will pass through the inlet-tube Xinto the upper compartment of the jacket H H2 and will travel around the furnace-body from rear to front until it reaches the channels x' m2, which lead to the segmental channel C, surrounding the magazine A B. From the channel C the air passes into said magazine th rough the spaces between the tubes T and thence downward (see Figs. 2 and 3) until it passes again,with the combustion-gases, between the tubes Tto enter the channel D, Fig. 5, from which the air passes to the chamber M through the flues O. A vertical partition N, located in `the chamber M, compels the air and combustionf ICO gases to travel around the chamber M in order to reach the smoke-flue Z, Fig. 7.

When the valve Z) is open, another current of air passes through the inlet-tube Y into the jacket H' H2 and reaches the ash-pit I through the ports or channels y y2, Fig. 4. The air then passes through the fuel', reaching the saine through the grate Q and through the spaces between the lowerrnost tubes T,` and finally passes out into the channel D, Iiues O, chamber M, and smoke-nue Z, as above described. that when both valves a and b are open an upward current of air passes through that part of the fuel which is below the channel D and a downward current of air passes thro ugh that part of the fuel which is above the channel` D. This particular direction of air-currents and their meeting in the fuel-magazine at the level ot' the channel D insure a very thorough combustion of the fuel.

l-Vhen kindling` thel fire, the door R' is opened, (doors R2 R3 are opened only for repairs or cleaning,) and when theblaze reaches the upper edge of channel D the door R' is closed, the air to support combustion being then supplied exclusively through the tubes X and Y.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a furnace, a fuel-chamber whose walls are composed of superposed bars surrounding a central space and spaced from each other, in combination with a body surrounding said fuel-chamber in proximity to said bars, the bodly having air inlet and outlet channels immediately adjacent. to said bars, so that said channels comm unicate with the central space of the fuel-chamber through the spaces between the bars thereof.

2. rlhe combination of the fuel-chamber having apertured walls, an air-inlet channel leading to the upper part of said apertured walls, another air-inlet leading to the bottom of the apertu red walls, and an air-outlet channel extending around the fuel-chamber at a level between said ai r-inlet channels, whereby air will pass upwardly and downwardly from the ends of the apertured walls through the fuel to the central part of the fuel-chamber.

The combination of the annular boiler,

It will therefore be seen L having a jacket and a partition dividing said jacket into an upper and a lower chamber, of a fuel-chamber within the furnace-body, in-

the fuel-chamber located axially relatively to the boiler andA extending below the same, the

annular smoke-chamber projecting into the Aboiler and spaced both from the inner and from the outer wall of said boiler so that there leading from said smoke-chamber, a channel connecting the fuel-chamber with the smokechamber, and means for supplying air to the smoke-chamber.

4. The combination with the furnace-body let-channels leading inward from each of the chambers of the jacket to the fuel-chamber, and an outlet-channel leading from the fuelchamber between said inlet-channels.

5. The combination, in a furnace, of a fuelchamber, air-inlet channels leading respectively to the upper and the lower part of said chamber, and connected valves arranged to which the end portions of the tubes pass out,

and a plate for closing the outer side of said space.

7. The combination of a boiler, a furnace comprising a body, a fuel-chamber located therein, the walls of said chamber being composed of tubes whose central portions surround the chamber, while their end portions extend outwardly through the furnace-body, a frame secured to the furnace-body at each side of the space through which the end portions of the tubes pass out, a plate for closing the outer side of said space, and circulationpipes connected with the boiler and with the ends of said tubes.

ANDERS BORCII RECK.

Witnesses:

JULES BLOM, CHARLES I-IUDE. 

